Issue #24402: Merge potential test fix from 3.5
This commit is contained in:
Martin Panter
commit
1431c5af94
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@ -1493,21 +1493,14 @@ class PtyTests(unittest.TestCase):
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"""Tests that use a pseudo terminal to guarantee stdin and stdout are
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terminals in the test environment"""
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def fork(self):
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def run_child(self, child, terminal_input):
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r, w = os.pipe() # Pipe test results from child back to parent
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try:
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return pty.fork()
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pid, fd = pty.fork()
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except (OSError, AttributeError) as e:
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self.skipTest("pty.fork() raised {}".format(e))
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def check_input_tty(self, prompt, terminal_input, stdio_encoding=None):
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if not sys.stdin.isatty() or not sys.stdout.isatty():
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self.skipTest("stdin and stdout must be ttys")
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r, w = os.pipe()
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try:
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pid, fd = self.fork()
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except:
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os.close(r)
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os.close(w)
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self.skipTest("pty.fork() raised {}".format(e))
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raise
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if pid == 0:
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# Child
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@ -1515,17 +1508,8 @@ class PtyTests(unittest.TestCase):
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# Make sure we don't get stuck if there's a problem
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signal.alarm(2)
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os.close(r)
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# Check the error handlers are accounted for
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if stdio_encoding:
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sys.stdin = io.TextIOWrapper(sys.stdin.detach(),
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encoding=stdio_encoding,
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errors='surrogateescape')
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sys.stdout = io.TextIOWrapper(sys.stdout.detach(),
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encoding=stdio_encoding,
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errors='replace')
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with open(w, "w") as wpipe:
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print("tty =", sys.stdin.isatty() and sys.stdout.isatty(), file=wpipe)
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print(ascii(input(prompt)), file=wpipe)
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child(wpipe)
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except:
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traceback.print_exc()
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finally:
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@ -1533,7 +1517,7 @@ class PtyTests(unittest.TestCase):
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os._exit(0)
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# Parent
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os.close(w)
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os.write(fd, terminal_input + b"\r\n")
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os.write(fd, terminal_input)
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# Get results from the pipe
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with open(r, "r") as rpipe:
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lines = []
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@ -1546,10 +1530,38 @@ class PtyTests(unittest.TestCase):
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# Check the result was got and corresponds to the user's terminal input
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if len(lines) != 2:
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# Something went wrong, try to get at stderr
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with open(fd, "r", encoding="ascii", errors="ignore") as child_output:
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self.fail("got %d lines in pipe but expected 2, child output was:\n%s"
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% (len(lines), child_output.read()))
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# Beware of Linux raising EIO when the slave is closed
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child_output = bytearray()
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while True:
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try:
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chunk = os.read(fd, 3000)
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except OSError: # Assume EIO
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break
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if not chunk:
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break
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child_output.extend(chunk)
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os.close(fd)
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child_output = child_output.decode("ascii", "ignore")
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self.fail("got %d lines in pipe but expected 2, child output was:\n%s"
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% (len(lines), child_output))
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os.close(fd)
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return lines
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def check_input_tty(self, prompt, terminal_input, stdio_encoding=None):
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if not sys.stdin.isatty() or not sys.stdout.isatty():
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self.skipTest("stdin and stdout must be ttys")
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def child(wpipe):
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# Check the error handlers are accounted for
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if stdio_encoding:
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sys.stdin = io.TextIOWrapper(sys.stdin.detach(),
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encoding=stdio_encoding,
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errors='surrogateescape')
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sys.stdout = io.TextIOWrapper(sys.stdout.detach(),
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encoding=stdio_encoding,
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errors='replace')
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print("tty =", sys.stdin.isatty() and sys.stdout.isatty(), file=wpipe)
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print(ascii(input(prompt)), file=wpipe)
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lines = self.run_child(child, terminal_input + b"\r\n")
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# Check we did exercise the GNU readline path
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self.assertIn(lines[0], {'tty = True', 'tty = False'})
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if lines[0] != 'tty = True':
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@ -1577,26 +1589,17 @@ class PtyTests(unittest.TestCase):
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def test_input_no_stdout_fileno(self):
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# Issue #24402: If stdin is the original terminal but stdout.fileno()
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# fails, do not use the original stdout file descriptor
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pid, pty = self.fork()
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if pid: # Parent process
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# Ideally this should read and write concurrently using select()
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# or similar, to avoid the possibility of a deadlock.
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os.write(pty, b"quux\r")
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_, status = os.waitpid(pid, 0)
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output = os.read(pty, 3000).decode("ascii", "backslashreplace")
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os.close(pty)
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self.assertEqual(status, 0, output)
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else: # Child process
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try:
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self.assertTrue(sys.stdin.isatty(), "stdin not a terminal")
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sys.stdout = io.StringIO() # Does not support fileno()
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input("prompt")
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self.assertEqual(sys.stdout.getvalue(), "prompt")
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os._exit(0) # Success!
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except:
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sys.excepthook(*sys.exc_info())
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finally:
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os._exit(1) # Failure
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def child(wpipe):
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print("stdin.isatty():", sys.stdin.isatty(), file=wpipe)
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sys.stdout = io.StringIO() # Does not support fileno()
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input("prompt")
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print("captured:", ascii(sys.stdout.getvalue()), file=wpipe)
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lines = self.run_child(child, b"quux\r")
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expected = (
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"stdin.isatty(): True",
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"captured: 'prompt'",
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)
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self.assertSequenceEqual(lines, expected)
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class TestSorted(unittest.TestCase):
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